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duplication - definition and synonyms

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noun [uncountable] duplication pronunciation in British English /ˌdjuːplɪˈkeɪʃ(ə)n/
  1. 1
    a situation in which one thing has the same purpose or effect as another and is therefore not necessary
    We’re hoping the new procedures will avoid duplication of effort.

nanodegree

a course of study which is much shorter than a university course and focuses on the skills you need for a job, especially computer-related skills

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hypocaust

an ancient Roman system of underfloor heating, used to heat houses with hot air; from the Latin 'hypocaustum'

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